//C11:11.28:hello.c --argc to number.
#include <stdio.h>
#include <stdlib.h>

int main(int argc, char* argv[])
{
    int i, times;

    if(argc < 2 || (times = atoi(argv[1])) < 1)        
    {
        printf("Usage: %s positive-numer\n", argv[0]);
    }
    else
    {
       for (i = 0; i < times; i++)
       {
           puts("Hello, good looking!");
       }
    }
}

